Secondary Air Injection System Air Flow/Pressure Sensor Circuit - Bank 2
The P2430 code means the vehicle's onboard diagnostic system has detected: Secondary Air Injection System Air Flow/Pressure Sensor Circuit - Bank 2. This is a low severity code.
- Keep driving?
- Yes, but fix soon
- DIY difficulty
- moderate
- Estimated cost
- $150 - $600 (parts and labor)
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Common Symptoms
- Check Engine Light illuminated
- Failed emissions test
- No drivability symptoms
- Secondary air pump may run longer than normal
- Cold start emissions slightly elevated
Probable Causes (Ranked by Likelihood)
- Failed secondary air pressure sensor Very High
- Damaged wiring to air flow sensor High
- Clogged secondary air injection passages Moderate
- Failed secondary air pump on bank 2 Moderate
Step-by-Step Diagnostic Procedure
-
Check the secondary air pressure sensor connector
-
Measure sensor signal voltage with scan tool
-
Inspect secondary air injection hoses for cracks or disconnection
-
Verify the secondary air pump operates during cold start
-
Check for restricted air passages at the exhaust manifold
Frequently Asked Questions
Can I drive with code P2430?
Yes, safe to drive. The secondary air injection system only operates during cold starts and has no effect on normal driving.
What causes P2430?
Usually a failed pressure sensor or clogged air injection passages. Carbon buildup can block the air passages at the exhaust manifold over time.
Is P2430 expensive to fix?
Typically $150 to $600. Sensor replacement is affordable. If the air passages are clogged, cleaning or exhaust manifold work adds cost.
Sources
This page is built from documented references. Verify against your own service info before repair work.
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